CVE-2024-26896 (GCVE-0-2024-26896)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:27 – Updated: 2025-05-04 08:59
VLAI?
Title
wifi: wfx: fix memory leak when starting AP
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: wfx: fix memory leak when starting AP Kmemleak reported this error: unreferenced object 0xd73d1180 (size 184): comm "wpa_supplicant", pid 1559, jiffies 13006305 (age 964.245s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 1e 00 01 00 00 00 00 00 ................ backtrace: [<5ca11420>] kmem_cache_alloc+0x20c/0x5ac [<127bdd74>] __alloc_skb+0x144/0x170 [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180 [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211] [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx] [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211] [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211] [<47bd8b68>] genl_rcv_msg+0x198/0x378 [<453ef796>] netlink_rcv_skb+0xd0/0x130 [<6b7c977a>] genl_rcv+0x34/0x44 [<66b2d04d>] netlink_unicast+0x1b4/0x258 [<f965b9b6>] netlink_sendmsg+0x1e8/0x428 [<aadb8231>] ____sys_sendmsg+0x1e0/0x274 [<d2b5212d>] ___sys_sendmsg+0x80/0xb4 [<69954f45>] __sys_sendmsg+0x64/0xa8 unreferenced object 0xce087000 (size 1024): comm "wpa_supplicant", pid 1559, jiffies 13006305 (age 964.246s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 10 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00 ...@............ backtrace: [<9a993714>] __kmalloc_track_caller+0x230/0x600 [<f83ea192>] kmalloc_reserve.constprop.0+0x30/0x74 [<a2c61343>] __alloc_skb+0xa0/0x170 [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180 [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211] [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx] [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211] [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211] [<47bd8b68>] genl_rcv_msg+0x198/0x378 [<453ef796>] netlink_rcv_skb+0xd0/0x130 [<6b7c977a>] genl_rcv+0x34/0x44 [<66b2d04d>] netlink_unicast+0x1b4/0x258 [<f965b9b6>] netlink_sendmsg+0x1e8/0x428 [<aadb8231>] ____sys_sendmsg+0x1e0/0x274 [<d2b5212d>] ___sys_sendmsg+0x80/0xb4 However, since the kernel is build optimized, it seems the stack is not accurate. It appears the issue is related to wfx_set_mfp_ap(). The issue is obvious in this function: memory allocated by ieee80211_beacon_get() is never released. Fixing this leak makes kmemleak happy.
Severity ?
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 268bceec1684932e194ae87877dcc73f534d921c , < a1f57a0127b89a6b6620514564aa7eaec16d9af3 (git)
Affected: 268bceec1684932e194ae87877dcc73f534d921c , < 3a71ec74e5e3478d202a1874f085ca3ef40be49b (git)
Affected: 268bceec1684932e194ae87877dcc73f534d921c , < 12f00a367b2b62756e0396f14b54c2c15524e1c3 (git)
Affected: 268bceec1684932e194ae87877dcc73f534d921c , < dadbb5d29d6c5f571a50272fce8c1505a9559487 (git)
Affected: 268bceec1684932e194ae87877dcc73f534d921c , < b8cfb7c819dd39965136a66fe3a7fde688d976fc (git)
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    Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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    "dateUpdated": "2025-05-04T08:59:07.701Z",
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Vulnrichment\"}], \"cna\": {\"title\": \"wifi: wfx: fix memory leak when starting AP\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"268bceec1684932e194ae87877dcc73f534d921c\", \"lessThan\": \"a1f57a0127b89a6b6620514564aa7eaec16d9af3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"268bceec1684932e194ae87877dcc73f534d921c\", \"lessThan\": \"3a71ec74e5e3478d202a1874f085ca3ef40be49b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"268bceec1684932e194ae87877dcc73f534d921c\", \"lessThan\": \"12f00a367b2b62756e0396f14b54c2c15524e1c3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"268bceec1684932e194ae87877dcc73f534d921c\", \"lessThan\": \"dadbb5d29d6c5f571a50272fce8c1505a9559487\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"268bceec1684932e194ae87877dcc73f534d921c\", \"lessThan\": \"b8cfb7c819dd39965136a66fe3a7fde688d976fc\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireless/silabs/wfx/sta.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.23\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireless/silabs/wfx/sta.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3\"}, {\"url\": \"https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b\"}, {\"url\": \"https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3\"}, {\"url\": \"https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487\"}, {\"url\": \"https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: wfx: fix memory leak when starting AP\\n\\nKmemleak reported this error:\\n\\n    unreferenced object 0xd73d1180 (size 184):\\n      comm \\\"wpa_supplicant\\\", pid 1559, jiffies 13006305 (age 964.245s)\\n      hex dump (first 32 bytes):\\n        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n        00 00 00 00 00 00 00 00 1e 00 01 00 00 00 00 00  ................\\n      backtrace:\\n        [\u003c5ca11420\u003e] kmem_cache_alloc+0x20c/0x5ac\\n        [\u003c127bdd74\u003e] __alloc_skb+0x144/0x170\\n        [\u003cfb8a5e38\u003e] __netdev_alloc_skb+0x50/0x180\\n        [\u003c0f9fa1d5\u003e] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\\n        [\u003c7accd02d\u003e] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\\n        [\u003c41e25cc3\u003e] wfx_start_ap+0xc8/0x234 [wfx]\\n        [\u003c93a70356\u003e] ieee80211_start_ap+0x404/0x6b4 [mac80211]\\n        [\u003ca4a661cd\u003e] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\\n        [\u003c47bd8b68\u003e] genl_rcv_msg+0x198/0x378\\n        [\u003c453ef796\u003e] netlink_rcv_skb+0xd0/0x130\\n        [\u003c6b7c977a\u003e] genl_rcv+0x34/0x44\\n        [\u003c66b2d04d\u003e] netlink_unicast+0x1b4/0x258\\n        [\u003cf965b9b6\u003e] netlink_sendmsg+0x1e8/0x428\\n        [\u003caadb8231\u003e] ____sys_sendmsg+0x1e0/0x274\\n        [\u003cd2b5212d\u003e] ___sys_sendmsg+0x80/0xb4\\n        [\u003c69954f45\u003e] __sys_sendmsg+0x64/0xa8\\n    unreferenced object 0xce087000 (size 1024):\\n      comm \\\"wpa_supplicant\\\", pid 1559, jiffies 13006305 (age 964.246s)\\n      hex dump (first 32 bytes):\\n        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n        10 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00  ...@............\\n      backtrace:\\n        [\u003c9a993714\u003e] __kmalloc_track_caller+0x230/0x600\\n        [\u003cf83ea192\u003e] kmalloc_reserve.constprop.0+0x30/0x74\\n        [\u003ca2c61343\u003e] __alloc_skb+0xa0/0x170\\n        [\u003cfb8a5e38\u003e] __netdev_alloc_skb+0x50/0x180\\n        [\u003c0f9fa1d5\u003e] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\\n        [\u003c7accd02d\u003e] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\\n        [\u003c41e25cc3\u003e] wfx_start_ap+0xc8/0x234 [wfx]\\n        [\u003c93a70356\u003e] ieee80211_start_ap+0x404/0x6b4 [mac80211]\\n        [\u003ca4a661cd\u003e] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\\n        [\u003c47bd8b68\u003e] genl_rcv_msg+0x198/0x378\\n        [\u003c453ef796\u003e] netlink_rcv_skb+0xd0/0x130\\n        [\u003c6b7c977a\u003e] genl_rcv+0x34/0x44\\n        [\u003c66b2d04d\u003e] netlink_unicast+0x1b4/0x258\\n        [\u003cf965b9b6\u003e] netlink_sendmsg+0x1e8/0x428\\n        [\u003caadb8231\u003e] ____sys_sendmsg+0x1e0/0x274\\n        [\u003cd2b5212d\u003e] ___sys_sendmsg+0x80/0xb4\\n\\nHowever, since the kernel is build optimized, it seems the stack is not\\naccurate. It appears the issue is related to wfx_set_mfp_ap(). The issue\\nis obvious in this function: memory allocated by ieee80211_beacon_get()\\nis never released. Fixing this leak makes kmemleak happy.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:49:42.985Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26896\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:49:42.985Z\", \"dateReserved\": \"2024-02-19T14:20:24.186Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:27:47.214Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.